The disease is believed to derive from repetitive head trauma, can lead to conditions like dementia and depression. Seau was born January 19, 1969 in Oceanside, the fifth child of Tiaina Seau Sr. and Luisa Mauga Seau of Aunu'u, American Samoa. Tiaina Sr.'s grandfather was a village chief in Pago Pago. Tiaina Sr. worked at a rubber factory and was a school custodian, Luisa worked at the commissary of Camp Pendleton in Southern California and a laundromat. After Seau was born, the family moved back to American Samoa for several years before returning to San Diego. At home and his three brothers had to sleep in the family's one-car garage. Seau attended Oceanside High School in Oceanside, where he lettered in football and track and field; as a football player, Seau was a starter at linebacker and tight end, as a senior, he was named the Avocado League offensive MVP and led the 18-member Oceanside Pirates team to the San Diego 2A championship. Parade selected Seau to its high school All-American team.

In basketball, as a senior, he was named the California Interscholastic FederationSan Diego Section Player of the Year. He helped his team win the 1987 Lt. James Mitchell Tournament and make third place in the Mt. Carmel Invitational. In track and field, he was the Avocado League champion in the shot put. Seau was named to California's all-academic team with a 3.6 grade-point average. After graduating from high school, Seau attended the University of Southern California, he had to sit out his freshman season due to his 690 SAT score on the college entrance exam, 10 points short of USC's minimum score for freshman eligibility. Seau told Sports Illustrated: "I was labeled a dumb jock. I went from being a four-sport star to an ordinary student at USC. I found out. Nobody stuck up for me—not our relatives, best friends or neighbors. There's a lot of jealousy among Samoans, not wanting others to get ahead in life, my parents got an earful at church:'We told you he was never going to make it.'" This prompted him to apologize to his coaches and principal at Oceanside High.

He lettered in his final two seasons with the Trojans, 1988 and 1989, posting 19 sacks in 1989 en route to a unanimous first-team All-American selection. After three years as a Trojan, Seau entered the NFL draft after his junior season and was chosen in the first round of the 1990 NFL Draft by Bobby Beathard's San Diego Chargers as the fifth overall draft selection. Seau became one of the most popular players on the Chargers, receiving the nickname "Tasmanian Devil", after the wild antics of the cartoon character, he became the face of a San Diego sports icon. Seau started 15 of the 16 games he played in during his rookie season, was named an alternate to the 1991 Pro Bowl after recording 85 tackles. In 1991, he picked up 129 tackles and seven sacks and was named to the 1992 Pro Bowl, the first of 12 consecutive Pro Bowls for Seau, he was voted NFL's Defensive MVP by the Newspaper Enterprise AssociationAFC Defensive Player of the Year by United Press International, as well as the NFL Alumni Linebacker of the Year and the NFLPA AFC Linebacker of the Year.

He started no fewer than 13 games for the Chargers over each of the ensuing 11 seasons, registering a career high with 155 tackles in 1994. That year, Seau was named NFL Defensive Player of the Year by United Press International, he led his team to a championship appearance in Super Bowl XXIX. In one of the greatest games in his career, he recorded 16 tackles in the 1994 AFC Championship Game while playing with a pinched nerve in his neck in a 17–13 victory over the Pittsburgh Steelers. In 2002, his final year with the Chargers, he logged a then-career low 83 tackles and missed his final Pro Bowl with an ankle injury. On April 16, 2003, Seau was traded to the Miami Dolphins for a conditional draft choice, he started 15 games that season for the 9–7 Dolphins and was one of their standout defensive players. However, in 2004, a torn pectoral muscle limited Seau to eight games, 68 tackles, one sack, he started five of the first seven games he played in with the Dolphins in 2005, but was placed on injured reserve on November 24 with an achillestendon injury.

On March 6, 2006, Seau was released by the Dolphins. Seau announced his retirement at an emotional press conference on August 14, 2006, he called it his "graduation". He contended that he was moving on to the next phase of his life. Seau returned to football just four days signing with the New England Patriots, he s

Francis Charles McMath was an American civil engineer and amateur astronomer. He became successful in the bridge-building industry, was president of the Canadian Bridge and Iron Company in Detroit, his sons were named Robert Raynolds and Neil Cook. He had a strong interest in amateur astronomy, along with his son Robert, began an ambitious program of observatory development, they collaborated with Judge Henry S. Hulbert from Wayne County, Michigan to construct The McMath-Hulbert Observatory by Lake Angelus near Pontiac, Michigan, they began collaborating with the University of Michigan, in 1931 the director suggested naming the site the McMath-Hulbert Observatory in honor of the founders. Robert would become a solar astronomer. In 1932 the McMath's and Judge Hulbert devised an innovative technique of taking multiple still images of the Sun, Moon and stars combining them into a movie. In May, 1933, McMath's 10-year-old granddaughter Peggy McMath was kidnapped from her Massachusetts schoolhouse by brothers Kenneth and Cyril Buck, but returned for a ransom of $60,000.

In 1933, he and his son were awarded the Franklin Institute's John Price Wetherill Medal. Following his death a 24" Cassegrain reflector telescope added to the McMath-Hulbert Observatory was named the F. C. McMath Memorial Telescope; the crater McMath on the Moon is co-named for his son Robert. A gift to the Union College, located in Schenectady, New York, endowed a summer research fellowship in 1946 in Civil Engineering in his name

Mattie Jane Jackson was an African-American author. She is known for her 1866 autobiography, The Story of Mattie J. Jackson: Her Parentage, Experience of Eighteen Years in Slavery, Incidents During the War, Her Escape from Slavery: A True Story, which contributed to the national knowledge of African-American family life during slavery and the reconstruction era of the United States, her autobiography presents the history of multi-generational familial relationships and their inner strength, despite repeated, forced separation. A copy of the manuscript is held in trust at the University of Chapel Hill. Mattie Jane Jackson was born in January 1847 in Missouri, she was the daughter of Ellen Turner. Despite being enslaved by different owners, her parents had three children together, including Sarah Ann, Mattie Jane, Esther J. After the birth of his youngest daughter, Westley Jackson escaped slavery through the Underground Railroad, after which, living in Chicago, Illinois, he became a "Minister of the Gospel" and "died before the War," as his daughter would remember.

Six years Ellen Turner met and married George Brown and together they had two sons. Brown escaped to Canada around 1855. After he left, Turner tried several times to join her husband, but was caught and beaten. Soon her owner, tired of her constant attempts to escape, sold her and her children to the captain of a Mississippi Riversteamboat; when Ellen met one Sam Adams and made preparations to marry, the steamboat captain kidnapped the family and sent them to Louisville, where they were sold to different owners. Mattie, with the help of the Underground Railroad was able to escape to Indianapolis, where her mother and brother were able to reach her several months later. Upon the end of the American Civil War and her mother and brother made their way back to St. Louis, where Ellen was able to marry Sam Adams. Shortly after the end of the war, Jackson's stepfather, now known as John G. Thompson, located the family and invited Jackson and her 11-year-old half-brother to join him and his wife, Dr. Lucy Susan Schuyler Thompson, a botanical physician and antislavery activist.

At the time she arrived in Lawrence in April 1866, Mattie could read a little bit, but could not write at all, was interested in continuing her education. Her stepmother took down the story of Mattie's life to date. In her preface Mattie said: "I feel it a duty to improve the mind, have had a thirst for education to fill that vacuum for which the soul has yearned since my earliest remembrance, thus I ask you to buy my little book to aid me in obtaining an education, that I may be enabled to do some good in behalf of the elevation of my emancipated brothers and sisters."Mattie Jackson would return to St. Louis, where, on July 27, 1869, she married William Reed Dyer, a Union Army veteran and porter on Mississippi River steamboats. Of their nine children, five would live to maturity. After Ellen Turner Adams' death in May 1893, the Dyers moved to Dardenne Prairie, about 35 miles from St. Louis, where they would live for the rest of their lives. Jackson, Mattie J; the Story of Mattie J. Jackson: Her Parentage, Experience of Eighteen Years in Slavery, Incidents During the War, Her Escape from Slavery: A True Story, at Documenting the American South.